I will give you some adive.Frist,I think you could get a part-time job to pay for your new clothers.You can do it at the weekend.Second,you should learn to plan your time.If you have too much homework every day,you should use the free time you have in school to work on your homework.Or you could tell your teacher about it.On the one hand,you need to do your homewor.On the other hand,you also need time and freedom to relax.
I hope my advice can help you.